Beethoven was one of my favorite composers, and my first research on him was for a middle school exam. Since that date, I decided to learn much more about him.
So I began to collect books on this composer and now have a sizeable collection of books, scores and prints. They are mainly old ones and some are very rare, among them the Cramer Magazin der Musik, the Blumenlese für Klavierliebhaber, the Musikalische Korrespondenz der teutschen Filarmonischen Gesellschaft für das Jahr 1791, the original edition of WoO 67 –Variations à quatre mains pour le piano forte sur un theme de Monsieur le Comte de Waldstein, Bonn, Simrock,  (maybe the only existing copy) and the 50 Veränderungen über einen Walzer von Anton Diabelli für Klavier (C-Dur), 1–50, Vaterländischer Künstlerverein, Abt. 2, Diabelli, 1381 (on loan from me to the Beethoven-Haus ).
Michael helped me on several occasions to catalogue books and scores, and to transcribe in “current” German language the old handwritten language of letters of my collection, including that by Breuning, Wegeler, Schindler, Caroline van Beethoven, Nottebohm, Frimmel, and many others.
In one of my visits to Bonn (September 2011), I came to the Beethoven-Haus with my friend Armando Orlandi and Michael was pleased to let Armando repair the Beethoven clock that is in the Museum. This pendulum clock was given to Beethoven as a gift from the Princess Christine Lichnowsky. The repair on this clock started at 8.45 in the Reading room of the Library of the Beethoven Haus. The tools were previously shipped from Genua to the Beethoven Haus, after a careful check that everything was available including any emergency piece. It took around two hours to repair the clock and once completed Michael relocated it back in room 9 of the museum.
A few years later, on 25th of April 2014, I came again to Beethoven-Haus with my friends Armando, the pianist Massimo Anfossi and Marco Pescetto. For that occasion, Michael kindly allowed me to present the Fantasia Biamonti 213 in the afternoon concert organized by the Beethoven-Haus at Small Music Hall and Massimo played this piece and other variations by Beethoven on the Graf piano in that room.
I would like to thank him for his continuous hard work over the years, for his loyalty and the professional working relationship we have had.
I am honored to have met him and be considered one of his friends!
Michael, I wish you a long, happy and healthy retirement.
Il tuo amico,